You want the banner to be 80% of the height of the building. you know your height (5.5 feet) is similar to the height of the building. your math teacher offers a suggestion that you can determine the height of the building by placing a mirror on the ground a set distance away from the building. your club follows those directions and puts a mirror on the ground 40 feet away from the building and you stand 4 feet away from the mirror. how tall is the building?